NASA ACTS University of Maryland
Hybrid Terrestrrial Satellite Networks
University of Maryland
NASA
R & D
Operational
Ka-Band using ACTS Satellite.
3m or 5m Antenna, built by Harris
ACTS OBP, bandwidth allocated based upon the queue in the FRACS.
n x 64 kbps
Via Frame Relay Access Control Switch (FRACS) built by COMSAT.
NO - FR
IP / FR using T1
Projects include: Study of various FEC, considering also ARQ GBN v. SR. Multicast ARQ and ARQ via a return terrestrial link using dial-up modems and the PSTN.
Compares the performance of X.25, FR, and TCP/IP (and UDP/IP).